Effect of back pressure during equal-channel angular pressing on deformation-induced porosity in copper


Autoria(s): Ribbe, Jens; Schmitz, Guido; Rösner, Harald; Lapovok, Rimma; Estrin, Yuri; Wilde, Gerhard; Divinski, Sergiy V.
Data(s)

01/06/2013

Resumo

The effect of back pressure during equal channel angular pressing (ECAP) on deformation-induced porosity is investigated. While percolating porosity was found after 4 ECAP passes in the absence of back pressure, no percolation was detected when a back pressure of 200 MPa was applied. However, after ECAP with back pressure continued to 8 passes, percolating porosity did appear. The nature of the percolating porosity developed in severely deformed materials is discussed.

Identificador

http://hdl.handle.net/10536/DRO/DU:30075983

Idioma(s)

eng

Publicador

Elsevier

Relação

http://dro.deakin.edu.au/eserv/DU:30075983/lapovok-effectbackpressure-2013.pdf

http://www.dx.doi.org/10.1016/j.scriptamat.2013.02.034

Direitos

2013, Acta Materialia

Palavras-Chave #severe plastic deformation #equal-channel angular pressing #copper #defects #diffusion
Tipo

Journal Article